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11th Standard Botany - Secondary Growth English Medium Free Online Test One Mark Questions 2020 - 2021

11th Standard

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Botany

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. Consider the following statements:
    In spring season vascular cambium
    i. is less active.
    ii. produces a large number of xylary elements.
    iii. forms vessels with wide cavities of these

    (a)

    (i) is correct but (ii) and (iii) are not correct

    (b)

    (i) is not correct but (ii) and (iii) are correct

    (c)

    (i) and (ii) are correct but (iii) is not correct

    (d)

    (i) and (ii) are not correct but (iii) is correct.

  2. What is the fate of primary xylem in a dicot root showing extensive secondary growth?

    (a)

    It is retained in the center of the axis

    (b)

    It gets crushed

    (c)

    May or may not get crushed

    (d)

    It gets surrounded by primary phloem

  3. Living part of the wood is called __________

    (a)

    Duramen 

    (b)

    Heart wood

    (c)

    Porous wood

    (d)

    Sap wood

  4. Quinine is obtained from the ____________ of the cinchona tree.

    (a)

    Root

    (b)

    resin

    (c)

    bark

    (d)

    gum

  5. Gymnosperm wood is known as _______________

    (a)

    non porous wood

    (b)

    hard wood

    (c)

    porous wood

    (d)

    sap wood

  6. Canada balsam is made from

    (a)

    gum

    (b)

    tannin

    (c)

    latex

    (d)

    resin

  7. Lentieels are seen in ___________

    (a)

    Phellodenn

    (b)

    phellem

    (c)

    phellogen

    (d)

    epidermis

  8. A bark used as spice ___________

    (a)

    Pinus

    (b)

    Cinchona

    (c)

    Cinnamon

    (d)

    Morus

  9. Choose the non living cells.
    (i) phellem
    (ii) phellogen
    (iii) phloem 
    (iv) xylem vessel

    (a)

    i and ii

    (b)

    ii and iv

    (c)

    all the four

    (d)

    i and iv

  10. ____________ is a fossil resin.

    (a)

    Gum Arabic

    (b)

    Amber

    (c)

    Turpentine

    (d)

    Latex

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